<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		
		<link rel="stylesheet" type="text/css" href="css/my.css"/>
		
		<style type="text/css">
			@import url("css/your.css");
		</style>
		<style type="text/css">
			div{
				color: blue;
			}
		</style>
	</head>
	<body>
		<div>这是外部样式（黄色）</div>
		<div>这是内部样式（蓝色）</div>
		<div style="color: red;">这是行内样式（红色）</div>
	</body>
</html>
